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I wanted to approximately evaluate the amount of energy generated by a solar panel at a given direction by using light intensity values produced by photo-resistors. Solar panels generate a high amount of energy under high solar radiation relative to the light intensity which is why I intended to use light intensity levels as indicators assigned to led colors – red, yellow and green. In other words, this project is for predicting the amount of energy generated by a solar panel between three light intensity thresholds, and also notifies you when the high threshold exceeded.

Figure - 11.1

How to calculate the generated energy by a solar panel

[ E = A * r * H * PR ] is the formula for calculating the generated energy by a solar panel, where A is the area of the solar panel, r is the efficiency, H is the average solar radiation and PR is the performance ratio or coefficient( usually 0.75).